8409820519 has 16 divisors (see below), whose sum is σ = 8742945600. Its totient is φ = 8079692544.

The previous prime is 8409820513. The next prime is 8409820609. The reversal of 8409820519 is 9150289048.

It is a cyclic number.

It is not a de Polignac number, because 8409820519 - 2⁹ = 8409820007 is a prime.

It is a super-2 number, since 2×8409820519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8409820513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7448347 + ... + 7449475.

It is an arithmetic number, because the mean of its divisors is an integer number (546434100).

Almost surely, 2^8409820519 is an apocalyptic number.

8409820519 is a deficient number, since it is larger than the sum of its proper divisors (333125081).

8409820519 is a wasteful number, since it uses less digits than its factorization.

8409820519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 8409820519 is about 91705.0735728400. The cubic root of 8409820519 is about 2033.5845908060.

The spelling of 8409820519 in words is "eight billion, four hundred nine million, eight hundred twenty thousand, five hundred nineteen".